now.json

{
  "version": 2,
  "public": true,
  "build": {
    "env": {
      "TYPE": "@type",
      "PROJECT_ID": "@project_id",
      "PRIVATE_KEY_ID": "@private_key_id",
      "PRIVATE_KEY": "@private_key",
      "CLIENT_EMAIL": "@client_email",
      "CLIENT_ID": "@client_id",
      "AUTH_URI": "@auth_uri",
      "TOKEN_URI": "@token_uri",
      "AUTH_PROVIDER_X509_CERT_URL": "@auth_provider_x509_cert_url",
      "CLIENT_X509_CERT_URL": "@client_x509_cert_url"
    }
  },
  "routes": [
    {
      "src": "^/public/static/(.*)",
      "headers": { "cache-control": "public,max-age=31536000,immutable" }
    },
    {
      "src": "^/(.*).(css|js)",
      "headers": { "cache-control": "public,max-age=31536000,immutable" }
    },
    {
      "src": "^/(.*).html",
      "headers": { "cache-control": "public,max-age=0,must-revalidate" }
    },
    { "handle": "filesystem" },
    { "src": "/.*", "status": 404, "dest": "/404" }
  ]
}